Bank-sloping attachment for elevating graders



AprilZZ 1924.- 1,491,460

A. O. BOSSHARD BANK SLOPING ATTACHMENT FOR ELEVATING GHADERS Filed Feb. 26, 1923 Patented Apr. 22, 19 24.

UNITED STATES P A T F I C v ALBERT O. BOSSHARD, 0F HAYESVILLE, IOWA.

BANK-SLOPING ATTACHMENT FOR ELEVATING GRADERS.

Application filed-February 26, 1923.

a bank sloping attachment for elevating Y graders and other earth moving or handling machines which use a curved or angular dirt cutter, such as a disc.

More particularly, it is my object to provide such an attachment, which can be conveniently used for cutting a smooth sloping bank, after a ridged cut has been left by the cutter, which attachment operates to make the smooth sloping bank simultaneously with the making of a subsequent out.

With these and other objects in view, my invention consists in the construction, arrangement and combination of the various parts of my device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which:

igur 1 shows a top or plan view of a bank sloping attachment embodying my invention.

Figure 2- shows a side elevation of the same; and

Figure 3 shows a sectional view taken on the line 3-3 of Figure 2, the bank sloping attachment being shown in rear elevation.

It is well-known that in certain earth cutting and handling machines, which use a disc or the like for a plow, or dirt cutting means, and particularly elevating graders of the kind mentioned, which are used in grading roads, there is a problem involved in cutting a sloping bank, whicharises from the peoular shape of a disk or plow earth cutter.

For instance, if, with the machine, a cut is being made through a ridge, it will be obvious that the disc used cuts a series of parallel grooves in the surface of the earth.

When the side of the road is reached, it is desirable as the surface of the road itself is lowered to cut a sloping side wall.

The cutting disc on a machine of the kind under consideration will cut the sloping side wall but it leaves it in a series of grooves, which are not satisfactory, are un- Serial No. 621,254.

sight-1y, and will not meet the requirements of the various road commissions.

In most instances, and in fact all instances of which I am aware, except where my own present improvement is used, the custom is for a contractor to cut off the ridges between the grooves by hand labor with spades or mattocks, which is slow and very expensive.

In the accompanying drawings, I have used the reference numeral 10 to indicate generally a portion of the frame of an earth cutting and handling machine, for instance an elevating grader, having mounted thereon the supporting upright 11, which has the spindle 12, on which is mounted a cutting disc 13, which serves as a plow.

It is obvious that when the dirt is cut with a curved or angular cutter, such as the disc 13, the surface, whether level or a part of a sloping bank, is left with alternate grooves 14 and ridges 15, as illustrated in Figure 3.

The surface of the road, which is to be traveled, can be readily smoothed down and in any event, is usually covered by gravel or pavement. These ridges and grooves are not so important in the drainage ditches at the side of the road, but they are unsightly and undesirable, when left on the sloping bank at the side of the road.

I have therefore provided my sloping bank attachment, which-consists of a cutting blade 16, which may have generally the form of a triangle and is pivoted at one corner, preferably on the spindle 12, as shown in Figure 2.

The cutting edge 17 is designed to stand in such position as to slice or shear and scrape the sloping bank for leaving it at the proper angle and for taking off the ridges 15 thereon.

At its forward corner, there is pivoted to the blade 16, a two-part rod 18, having a turn-buckle 19 or its equivalent. The rod 18 extends forwardly and has an eye 20 connected with an eyebolt 21 with suflicient play to serve as a draft bar, and yet to permit the pivotal movement of the blade 16 hereafter referred to.

On the frame 10, there is pivoted at 22 a bell crank lever 23. with the bell crank lever 23 and is adjustably connected with the blade 16 by means of a bolt 25 selectively mounted in one of a series of holes 26 in the blade.

A link 2% is connected Pivoted on the frame 10 is a lever 27 adjacent to which is a notched sector 28. A spring actuated pawl 29 on the lever coacts with the notched sector.

A, link 30 connects the bell crank lever 23 and the lever 27.

By adjusting the lever 27, the cutting edge 17 of the blade 16 may be adjusted to different cut-ting angles or may be lifted to position where it will be ordinarily inope z tive.

It will be seen that in the practical operation of the blade 16, it will slice oil the ridges 15 on the sloping bank 31 with a shearing and scraping action.

In this connection, attention is called to the fact that it the frame member 10 is parallel with the longitudinal axis of the machine, the blade 1.6 when in operation will be arranged with its cutting edge 17 inclined from its lower point upwardly and laterally and also forwardly, as illustrated in the three figures of the drawing.

The use of this attachment reduces very substantially the expense of making a smooth sloping bank, Where the earth cutting is done With a cutter.

Some changes might be made in the construction and arrangement of the various parts of my device, and it is my intention to cover by my claim any modified forms of structure or use of mechanical equivalent, which may be reasonably included within their scope.

I claim as my invention:

In a bank sloping cutter, a frame, a spindle thereon, a disc cutter mounted on said spindle, a cutter b ade pivoted near one edge on said spindle, and standing normally With its blade extending away from the vertical fore and aft plane of the frame and also inclined from its rear edge upwardly and forwardly for cutting a smooth sloping bank, a draw bar connecting said blade and the frame, and a lever structure for raising and lowering said blade, the parts having sufiicient play to permit adjustment of the blade by the lever.

Des Moines, Iowa, February 21, 1923.

ALBERT O. BOSSHARI). 

